[zuul] Use the stf-crc-jobs project template

Instead of updating the .zuul.yaml file everytime
infrawatch/service-telemetry-operator adds a new job, the
project-template can be updated in STO, which will
propogate the change to the project and avoid leaving gaps
in testing.

Depends-On: http://github.com/infrawatch/service-telemetry-operator/pull/514

.zuul.yaml

@@ -2,6 +2,5 @@
 - project:
     name: infrawatch/prometheus-webhook-snmp
     github-check:
-      jobs:
-        - stf-crc-latest-nightly_bundles
-        - stf-crc-latest-local_build
+      templates:
+        - stf-crc-jobs